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WWVH is the Pacific sister station to WWV, and has a similar broadcast format. Like WWV, WWVH's main function is the dissemination of the official U.S. Government time and frequency standard. Due to ionospheric conditions, at certain times and locations some listeners may receive both WWV and WWVH on the same frequency at the same time. The ...
The US service is provided by radio stations WWV (Colorado) and WWVH (Hawaii). The methods below provide either Coordinated Universal Time (UTC), which is defined by Recommendation ITU-R TF.460, [3] or the official U.S. implementation of UTC, officially labeled UTC (NIST).
CHU can be practically unusable in most of Western Canada, Nunavut, and the Northwest Territories, for significant stretches of time. U.S. stations WWV and WWVH are the fallback in Western Canada. In the high Arctic, however, both the U.S. shortwave time stations and CHU become essentially unusable or unreliable.
WWV Transmitter Building (2002 or earlier) WWV's 15 MHz antenna WWV is a shortwave ("high frequency" or HF) radio station, located near Fort Collins, Colorado.It has broadcast a continuous time signal since 1945, and implements United States government frequency standards, with transmitters operating on 2.5, 5, 10, 15, 20, and 25 MHz. [1]
WWVB, along with NIST's shortwave time code-and-announcement stations WWV and WWVH, were proposed for defunding and elimination in the 2019 NIST budget. [6] However, the final 2019 NIST budget preserved funding for the three stations. [7] At midnight on April 7, 2024, WWVB's south antenna was disabled due to damage sustained during high winds.
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WWV and WWVH (United States) The RCC's IRIG Standard 106 [1] is a comprehensive telemetry standard for aeronautical applications at RCC member ranges. Chapter 10 of Standard 106 [2] governs digital flight data recorders. IRIG Standard 313-01 prescribes test standards for flight termination receivers. [3]
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